Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.symbology.fmap.mapcontext.rendering.legend.impl;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.MapContextManager;

import org.gvsig.fmap.mapcontext.rendering.legend.ISingleSymbolLegend;

import org.gvsig.fmap.mapcontext.rendering.legend.events.SymbolLegendEvent;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

import org.gvsig.tools.util.Callable;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * Implements a legend composed by single symbols.

 * 

 */

public class SingleSymbolLegend extends AbstractVectorialLegend implements

                ISingleSymbolLegend {

        final static private Logger LOG = LoggerFactory.getLogger(VectorialUniqueValueLegend.class);

        public static final String SINGLE_SYMBOL_PERSISTENCE_DEFINITION_NAME =

                        "SimgleSymbolLegend";

        private ISymbol defaultSymbol;

    private int shapeType = Geometry.TYPES.SURFACE; // Por defecto, tipo pol?gono

        /**

         * Constructor method, needed by persistence.

         */

        public SingleSymbolLegend() {

                super();

        }

        /**

         * Convenience fast constructor.

         *

         * @param style S?mbolo.

         */

        public SingleSymbolLegend(ISymbol style) {

                super();

                setDefaultSymbol(style);

        }

    @Override

        public void setDefaultSymbol(ISymbol s) {

                if (s == null) {

            throw new NullPointerException("Default symbol cannot be null");

        }

                ISymbol old = defaultSymbol;

                defaultSymbol = s;

                fireDefaultSymbolChangedEvent(new SymbolLegendEvent(old, s));

        }

        public ISymbol getSymbol(int recordIndex) {

                return defaultSymbol;

        }

    @Override

        public ISymbol getDefaultSymbol() {

                if(defaultSymbol==null) {

                        defaultSymbol = getSymbolManager().createSymbol(shapeType);

                }

                return defaultSymbol;

        }

    @Override

        public int getShapeType() {

                return shapeType;

        }

    @Override

        public void setShapeType(int shapeType) {

                if (this.shapeType != shapeType) {

                        if(defaultSymbol==null || defaultSymbol.getSymbolType()!=shapeType){

                                defaultSymbol = getSymbolManager().createSymbol(shapeType);

                        }

                        this.shapeType = shapeType;

                }

        }

    @Override

    public ISymbol getSymbolByFeature(Feature feat) {

        return getDefaultSymbol();

    }

    @Override

        public void useDefaultSymbol(boolean b) {

                LOG.warn("TODO: SingleSymbolLegend.useDefaultSymbol");

        }

    public String[] getUsedFields() {

        return new String[0];

    }

    @Override

    public boolean isUseDefaultSymbol() {

            return true;

    }

    public String getClassName() {

                return getClass().getName();

        }

    @Override

    public boolean isSuitableForShapeType(int shapeType) {

                return getShapeType() == shapeType;

        }

        public void setFeatureStore(FeatureStore fs) throws DataException {

                LOG.warn("TODO: SingleSymbolLegend.useDefaultSymbol");

        }

    @Override

        protected String[] getRequiredFeatureAttributeNames(

                        FeatureStore featureStore) throws DataException {

                // We only need the default Geometry to draw

                return new String[] { featureStore.getDefaultFeatureType().getDefaultGeometryAttributeName() };

        }

    @Override

        public Object clone() throws CloneNotSupportedException {

                SingleSymbolLegend clone = (SingleSymbolLegend) super.clone();

                // Clone default symbol

                if (defaultSymbol != null) {

                        clone.defaultSymbol = (ISymbol) defaultSymbol.clone();

                }

                return clone;

        }

    @Override

        public void loadFromState(PersistentState state)

                        throws PersistenceException {

                super.loadFromState(state);

        }

    @Override

        public void saveToState(PersistentState state) throws PersistenceException {

                super.saveToState(state);

        }

        public static class RegisterPersistence implements Callable {

        @Override

                public Object call() throws Exception {

                        PersistenceManager manager = ToolsLocator.getPersistenceManager();

                        if( manager.getDefinition(SINGLE_SYMBOL_PERSISTENCE_DEFINITION_NAME)==null ) {

                                DynStruct definition = manager.addDefinition(

                                                SingleSymbolLegend.class,

                                                SINGLE_SYMBOL_PERSISTENCE_DEFINITION_NAME,

                                                SINGLE_SYMBOL_PERSISTENCE_DEFINITION_NAME+" Persistence definition",

                                                null, 

                                                null

                                );

                                // Extend the Vectorial Legend base definition

                                definition.extend(manager.getDefinition(VECTORIAL_LEGEND_PERSISTENCE_DEFINITION_NAME));

                        }

                        return Boolean.TRUE;

                }

        }

        public static class RegisterLegend implements Callable {

        @Override

                public Object call() throws Exception {

                MapContextManager manager = MapContextLocator.getMapContextManager();

            manager.registerLegend(ISingleSymbolLegend.LEGEND_NAME,

                    SingleSymbolLegend.class);

                        return Boolean.TRUE;

                }

        }

}